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1 - 10 of 43 Search Results for top hat profile

1pdf document  UnderstandingLaserBeamParameters Best match in this PDF  |  All matches in this PDF
…is the most important propagation-related attribute of a laser beam. In case of a perfect top-hat (or flat-top) profile the beam diameter is clear but most laser beams have other transverse shapes or profiles (for example, Gaussian) in which case the definition and measurement of the beam diameter is…
Related Searches: beam delivery system | beam quality factor | gaussian beam propagation | beam waist

2pdf document  BeamShapingLFW05Rev2 Best match in this PDF  |  All matches in this PDF
profile that enables uniform processing at the workpiece over the entire illuminated area. The raw output of an excimer laser is a quasi-rectangular beam, typically around 8 × 20 mm, with a near-Gaussian profile in the short axis, and a "top hat" (super Gaussian) profile in the long axis. Top hat
Related Searches: beam expander | beam shaping optics | beam homogenizer | line generator lens

3pdf document  Solid-StatePulsedHigh-RepetitionRateExcimerLasersRev2 Best match in this PDF  |  All matches in this PDF
…settings. 2.2 Laser Beam Parameters Beam Profile Measured at 30 cm from the beam exit (near field) the OPTex Pro exhibits the rectangular near-field beam intensity distribution which is typical for excimer lasers. Along the vertically aligned long axis a top-hat profile is obtained, whereas along the horizontally…
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4pdf document  pdf 126 Best match in this PDF  |  All matches in this PDF
…and angle pattern in a sample with net density increase. Exposure conditions were: circular aperture, circular laser polarization, and top-hat beam intensity profile. The lines show the direction of the slow axis (higher index of refraction), the length of the lines is proportional to the magnitude of…
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5pdf document  EXCIMERCleaningforsensitivesurfaces Best match in this PDF  |  All matches in this PDF
…pulse repetition rate and therefore allows an extremely fast automated processing. An accurately controlled beam positioning together with the top-hat profile ensures a very homogeneous, uniform and reliable irradiation of each surface element with an almost identical laser fluence. Preliminary investigations…
Related Searches: homogenizer

6Paper Title  (PAGE 4 OF 8)
…Laser Beam Parameters
Beam Profile
Measured at 30 cm from the beam exit (near field) the OPTex Pro exhibits the rectangular near-field beam intensity
distribution which is typical for excimer lasers. Along the vertically aligned long axis a top-hat profile is obtained,
whereas along…

7Highlights No. 60 | FINAL.QXP  (PAGE 11 OF 12)
…using a circular beam
aperture with top-hat intensity profile and
circularly polarized or unpolarized laser
beam. In this case the profile of the
measured wavefront distortion will
approximately match the beam intensity
profile, and the stress-induced birefringence

8pdf document  PowerofPumpRev3 Best match in this PDF  |  All matches in this PDF
…around the rod at 120° to each other delivers high pump energy with reasonable uniformity, generating a smooth "top hat" profile consisting of multiple transverse modes. The top hat profile is well-suited to pumping Ti:sapphire amplifiers. The modular cavity design permits field replacement of the diode…
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950390-164.indd  (PAGE 1 OF 3)
profile that enables uniform processing at the workpiece
over the entire illuminated area.
The raw output of an excimer
laser is a quasi-rectangular beam,
typically around 8 × 20 mm, with
a near-Gaussian profile in the
short axis, and a "top hat" (super
Gaussian) profile
Related Searches: homogenizer optics

10pdf document  FUN 12 R DELMDAHL revised Best match in this PDF  |  All matches in this PDF
…otherwise results from energy density fluctuations across the ablation area. Excimer lasers by nature provide the necessary rectangular beam profile with high top-hat homogeneity. Shot-to-shot stability is absolutely essential in PLD, because it determines the reproducibility of the thin film material properties…
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